Billiard cue stick



FIG. 1 is a top plan view of a billiard cue stick showing my new design, the opposite side being a mirror image of the shown;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof; and,

FIG. 4 is a right side isometric view thereof, the left side isometric view being a mirror image of the shown. 

The ornamental design for a billiard cue stick, as shown and described. 